Formation of a donor-stabilized tetrasilacyclobutadiene dication by a Lewis acid assisted reaction of an N -heterocyclic chloro silylene

Shigeyoshi Inoue; Jan D. Epping; Elisabeth Irran; Matthias Driess

doi:10.1021/ja2033475

Formation of a donor-stabilized tetrasilacyclobutadiene dication by a Lewis acid assisted reaction of an N -heterocyclic chloro silylene

Shigeyoshi Inoue, Jan D. Epping, Elisabeth Irran, Matthias Driess

Technische Universität Berlin

Research output: Contribution to journal › Article › peer-review

85 Scopus citations

Abstract

The first donor-stabilized tetrasilacyclobutadiene dication species has been synthesized and fully characterized. Its unexpected formation occurs by the Lewis acid assisted reaction of the N-heterocyclic chloro silylene [L(Si:)Cl] (L = PhC(NtBu)₂; amidinate) with Cp*ZrCl₃ (Cp* = pentamethylcyclopentadienyl) in the molar ratio of 3:2. Remarkably, the four-membered Si₄ core consists of two N-donor stabilized silylium subunits and two silylene-like moieties. The dicationic charge is somewhat delocalized on the Si₄ core, which is supported by DFT calculations.

Original language	English
Pages (from-to)	8514-8517
Number of pages	4
Journal	Journal of the American Chemical Society
Volume	133
Issue number	22
DOIs	https://doi.org/10.1021/ja2033475
State	Published - 8 Jun 2011
Externally published	Yes

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abstract = "The first donor-stabilized tetrasilacyclobutadiene dication species has been synthesized and fully characterized. Its unexpected formation occurs by the Lewis acid assisted reaction of the N-heterocyclic chloro silylene [L(Si:)Cl] (L = PhC(NtBu)2; amidinate) with Cp*ZrCl3 (Cp* = pentamethylcyclopentadienyl) in the molar ratio of 3:2. Remarkably, the four-membered Si4 core consists of two N-donor stabilized silylium subunits and two silylene-like moieties. The dicationic charge is somewhat delocalized on the Si4 core, which is supported by DFT calculations.",

author = "Shigeyoshi Inoue and Epping, {Jan D.} and Elisabeth Irran and Matthias Driess",

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T1 - Formation of a donor-stabilized tetrasilacyclobutadiene dication by a Lewis acid assisted reaction of an N -heterocyclic chloro silylene

AU - Inoue, Shigeyoshi

AU - Epping, Jan D.

AU - Irran, Elisabeth

AU - Driess, Matthias

PY - 2011/6/8

Y1 - 2011/6/8

N2 - The first donor-stabilized tetrasilacyclobutadiene dication species has been synthesized and fully characterized. Its unexpected formation occurs by the Lewis acid assisted reaction of the N-heterocyclic chloro silylene [L(Si:)Cl] (L = PhC(NtBu)2; amidinate) with Cp*ZrCl3 (Cp* = pentamethylcyclopentadienyl) in the molar ratio of 3:2. Remarkably, the four-membered Si4 core consists of two N-donor stabilized silylium subunits and two silylene-like moieties. The dicationic charge is somewhat delocalized on the Si4 core, which is supported by DFT calculations.

AB - The first donor-stabilized tetrasilacyclobutadiene dication species has been synthesized and fully characterized. Its unexpected formation occurs by the Lewis acid assisted reaction of the N-heterocyclic chloro silylene [L(Si:)Cl] (L = PhC(NtBu)2; amidinate) with Cp*ZrCl3 (Cp* = pentamethylcyclopentadienyl) in the molar ratio of 3:2. Remarkably, the four-membered Si4 core consists of two N-donor stabilized silylium subunits and two silylene-like moieties. The dicationic charge is somewhat delocalized on the Si4 core, which is supported by DFT calculations.

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JF - Journal of the American Chemical Society

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Formation of a donor-stabilized tetrasilacyclobutadiene dication by a Lewis acid assisted reaction of an N -heterocyclic chloro silylene

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